Sash-fastener.



' w. H. NELsoN.-

. SASH FASTENEH.

(Application filed Jan. 11, 1902.)

No. 705,282. Patented my 22, |902.

v(No Model.)

I o1 .Yi

- BY y h x' \';ATTOHNEY UNITED STATES PATI-ZNT OFFICE WILLIAM H. NELSON,OF HAZLETON, IOWA.

SASH-FASTENER. I

SPECIFIGATION'forming part of Letters Ill-"atentV No.` 705,282,datedJuly 22, 1902.

Application led January 1l, 1902. Serial No.89.281. (No model.)

To @ZZ whom t may aon/cern,.-

Be it known that I, WILLIAM H. NELSON, a citizen of the United States,residing at Hazleton, in the county of Buchanan and State of Iowa, haveinvented certain new and useful Improvements in Sash-Fasteners, of whichthe following is a speciiication.

My invention relates to sash-locks, and more particularly to that classof locks or fasteners which are designed to secure sliding windoW-sashesin any desired position, either open or closed; and the objects of myinvention are to provide a lock for fastening sliding window-sashes inany position in which they may be placed, whether open or closed, toprovide a lock hidden from the outside and a special form of key. foroperating the same. Iattain these objects by the mechanisms illustratedin the accompanying drawings, in which Y Figure 1 is a horizontalsection of portions of upper and lower window-sashes and part of theirinclosing casing containing my iinproved sash-lock, showing both sasheslocked by the bolts thereof. portion of a window-casing and the recessedupper and lower sashes and a side elevation of the lock withcoveringplate removed,

the parts of the lock in the position which they assume when the sashesare locked thereby. Fig. 3 is a side elevation of the lock-case, thesliding guide being removed. Fig. 4: is a side elevation of thelock-case with all movable parts removed, and Fig. 5 is a View showingthe manner of fastening the key and of holding one of the bolts out ofengagement with a sash.

Similar letters refer to similar parts throughont the several views.

c represents a window-casing in which work the upper and lower sashes aand b, respectively. The window-casing is countersunk to permit oftheintroduction o f the lock-casing d. An opening is also provided inthe casing for the introductionvof the key. Recesses u and t are sunkinto the corner edges of the upper and lower sashes in proper positionsto permit of their engagement with the bolts of the lock. The lock iscontained within a rectangular 'casing d, which has openings and d2provided so that the bolts g and h may work therein and which has a Fig.2 is a view of al guide-piece o running longitudinally of it to hold inposition the bolt-guides g and h, respectively. This casing also has arecess at one end to permit of the introduction, of the key s. Thebolt-guides g and h work, respectively, along the upper and under sidesof the guide-piece o and are of exactly similar construction, butreversed in position with respect to each other. One end of each isprovided with a stud to engage ashoulder on the guide-piece o and alsowith a stud to engage springs m and n, respectively. The springs m and nordinarily keep the boltguides c/ and h in a position whereby the boltsg and h/ arein engagement with the sides of the recesses u and t,respectively, locking both window-sashes. The bolt-guide ghas aprojection g2'and the bolt-guide h has a projection h2 for the purposeofengaging the recessed sides of the slide-piece f. The slidepiece f isprovided with a transverse piece f which is slotted for the introductionof the spindle lc of the key s. Eachvof the long sides ofthe slide-piecef isV recessed, that the pro- -jections'gand h2 of the bolt-guides g andh,

Y This slide- Y .piece fis also provided with a longitudinalrespectively, may work therein.

slot to accommodate the screw fastening the cover e. The cover e has atransverse piece e', which holds the slide f in position. A key shasstuds or wards 7c and k2 placed on opposite sides of its shaft k,nearthe end thereof: Itsshaft or spindle k. is threaded in order toworkwithin the interior threaded barrel p of thel key, so vthat thelength of the spindle may be adjusted to` different thicknesses ofcasing-moldings. The barrel p is also slotted at r andy fr', said slotsbeing provided for the purpose of providing a means of engagement withthe inner edges of the key-plate fw.

The manner of operating the sash-lock is as follows: The parts of thelock being in the position shown in Fig. 1, both sashes being locked, ifit is desired to lower the upper sash a and fix it at any desired heightthe. key s is introduced into the lock by pushing the end of its shaft kthrough the slot in the transverse piece f and turning it aboutone-quarter around until the ward 7c engages the inner side of saidtransverse piece. The key is then pulled out to a position indicated bythe dotted lines in Fig. 5, the slide-piece f engag- IOO ing theprojection g2 and drawing the bolt g' out of the recess u, freeing thewindow-sash a. The bolt g is prevented from being retracted into therecess u by the action of the spring m, if the slot 7' in the barrel pof the key s is brought into engagement with the inner edge of thekey-plate w. When the sash a has been lowered to the extent desired, thekey s is released from the edge of the keyplate w,when the retractileforce of the spring m draws the bolt g into engagement with the sides ofthe nearest recess u, locking the sash. The lower sash b may be raisedand locked in a similar manner, except that the bolt h is released fromengagement with the sash by pushing in the key s and letting the slot r'in its barrel 19 engage the inner edge of the keyplate w. When the keysis so pushed inward, its ward k2 engages the transverse plate f',causing the slide-piece f to engage the projection h2, sliding the bolth. When the key s has been removed from the lock, the retractile forceof the springs m and n keeps the bolts g and lL locked into the recessesu and t, respectively. The lock is then invisible from the outside andcan only be operated by means 0E a key similar to that described.

Having described my invention, what l claim as new, and desire to secureby Letters Patent, is-

l. A sash-fastener, consisting of the combination of window-sasheshaving a plurality of recesses on the inner corners of their verticaledges nearest the lock, with a lock having bolts arranged to engage thesides of said recesses, a recessed slide-piece adapted to actuate saidbolts, springs to hold said bolts in engagement with said recesses inthe sashes, a key having a slotted barrel and adjustable spindle, and akey-plate, substantially as shown and described.

2. A sash-fastener, consisting of the combination of a lock-casing,bolts movable in and through said casing, tension-springs for keepingsaid bolts in one position, a movable slidepiece for actuating saidbolts, with a key having a slotted barrel and adjustable spindle havingstuds nearits end on its opposite sides, and a key-plate, substantiallyas shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM H. NELSON.

Witnesses:

N. M. MIGUET, T. E. MCCURDY.

